| 摘要 |
<p>A method for achieving high bit densities in a direct-sequence CDMA spread spectrum communication system. A table of orthogonal pseudo-noise codes is stored. This table is then partitioned into multiple codebook (311, 312, 313). Then, the codebook (311) is assigned to a user. The pseudo-noise code contained within the codebooks are used to spread information signal (401). Information signal (401) for a first user is spread by a pseudo-noise code contained within the codebook (311) assigned to the first user. Multiple bits of information signal may be sent at a time by using the location of the pseudo-noise code within the codebook (311) such that the value of the information signal (401) corresponds the location of the pseudo-noise code within the codebook (311). The information signal (401) is then despread by using the same pseudo-noise code.</p> |
